so let me bring in now former vice president of american airlines and now an aviation consultant scott masonthanks for being with us, scott. >> my pleasure to be here. >> how can an airline, in 2022, be operated largely by reliance on a 1990s phone system? because that's the crux of this, right? >> i think there are several cruxes, that seems to be one of them. and the simple answer is, i don't understand how this can happen either. on the one hand scheduling crews is complicated and recovering from what the industry calls schedule operations putting airplanes and the crews back together again is a difficult problem but airlines have been working on this for a long time. we built systems to deal with it 35 years ago. and have improved them over the years so the systems are better, the algorithms are better, communications are better. cell phones and texting and giving the crews access to the systems from home. it's hard to understand how southwest could have gotten themselves in the situation. >> so what's different? you were a high ranking exec at american airlines. what's the system that a